The SK32 Firebrick is a high-performance fire clay refractory brick made from premium bauxite clay, with an Al₂O₃ content of ≥35%. Belonging to the clay refractory brick category, SK32 bricks offer exceptional thermal stability, mechanical strength, wear resistance, and acid corrosion resistance. With a classification temperature of 1430°C and a working temperature range up to 1300°C, SK32 bricks are ideal for various high-temperature industrial applications.
Manufactured by Xintai Refractory, a leading refractory brick supplier in China, these bricks are trusted by global industry leaders including RUSAL, CHALCO, ALBA, POSCO, and PSM. Kerui offers standard and custom-shaped bricks, ensuring performance and flexibility for every customer’s thermal processing needs.
Technical Specifications of SK32 Firebrick
| Item | SK-32 |
|---|---|
| Al₂O₃ (%) | ≥35 |
| Fe₂O₃ (%) | ≤2.5 |
| Refractoriness (SK) | ≥32 |
| Classification Temperature | 1430°C |
| Refractoriness Under Load (0.2 MPa) | ≥1300°C |
| Apparent Porosity (%) | ≤20–24 |
| Bulk Density (g/cm³) | 1.95–2.10 |
| Cold Crushing Strength (MPa) | ≥45 |
| Standard Size | 230 × 114 × 65 mm |
| Custom Sizes | Available upon request |
Key Features
High refractoriness up to 1430°C
Excellent thermal shock resistance
Strong acid and alkali resistance
High mechanical strength (≥45 MPa)
Low apparent porosity for better insulation
Low thermal conductivity and energy loss
Stable chemical performance and corrosion resistance
Customized shapes available (arched, axe, key bricks, etc.)
Eco-friendly manufacturing process
Free samples available for global customers
Typical Applications
- Metallurgical Industry: Used as linings in blast furnaces, hot blast stoves, converters, and cupolas. Offers high-temperature insulation and structural protection.
- Cement and Glass Industry: Applied in rotary kilns, preheaters, and glass melting furnaces for improved durability and thermal resistance.
- Ceramic Industry: Lining for tunnel kilns, shuttle kilns, and firing chambers, where thermal stability is critical.
- Petrochemical and Energy Industries: Ideal for coke ovens, boilers, quenching towers, and incinerators due to its excellent acid and corrosion resistance.
- Non-ferrous Metallurgy: Recommended for aluminum smelting furnaces and zinc processing equipment.
Production Details of SK32 Firebrick
The SK32 Firebrick is produced at Xintai’s modern manufacturing base in Xinmi, Henan, China. The bricks are formed from carefully selected bauxite clay and other high-purity materials using advanced pressing and high-temperature tunnel kiln firing processes. This results in a uniform, dense, and dimensionally stable product with consistent quality.
Xintai follows a strict quality control system, from raw material inspection to finished product testing. The production process is certified to international standards, with support for third-party testing and inspection as required by clients.
Packing and Shipping Details
Packing Method: SK32 bricks are securely packed in wooden pallets or plywood crates, wrapped in shrink film to protect against moisture and mechanical damage.
Shipping: Products can be shipped by sea, land, or air, with optimized container loading plans to reduce shipping costs and ensure safe delivery.
Frequently Asked Questions (FAQ)
Q1: What is the maximum operating temperature of SK32 firebricks?
The bricks can be used in working conditions up to 1300–1350°C, with a classification temperature of 1430°C.
Q2: What are the standard dimensions of SK32 bricks?
Standard size is 230 × 114 × 65 mm, but custom sizes and shapes can be produced based on drawings or requirements.
Q3. Can I get samples for testing?
Yes. Modules can be customized in size, anchor type (such as Y-anchor, V-anchor, or studs), and folding direction to suit various kiln designs and mounting systems.
Q4: What is the MOQ (Minimum Order Quantity)?
MOQ is flexible, typically starting from one pallet. For trial orders, please contact our sales team.
Q5: Are SK32 firebricks resistant to acids and slag?
Yes, they offer good acid resistance and slag corrosion resistance, making them suitable for harsh chemical environments.
